Hey sorry, I'm using your api (which is incredible !) to create customitems by coding, the problem is, there are litteraly one tutorial about it and nothing else, so I got some questions ^^. How can I get the itemstack of the custom item ? And can I have ur discord ? I'm limited here !

Hey, you don't know me but I've literally just made a spigot account just to talk to you. This message was longer and really sweet but you can only do a max of like 400 characters :(
Can I have your discord link?

Not yet, but it is something I want to eventually do. The current approach for Custom Blocks that most people use is Mob Spawners with Armor Stands inside that have a Diamond Hoe as their head, that is then moved and resized to fit the block exactly.

This is definitely an imperfect approach. First off, it causes quite a bit of lag due to all the entities, but way less than having normal Armor Stands. Also, you can't mine it fast and the breaking Particles are of the Mob Spawner. Finally, the Armor Stand stops rendering when you go far from the block and returns to its original texture.

Both SimplySarc and Logdotzip have videos on Custom Blocks that work exactly like this. I suggest you go check them out. I've also seen some Spigot plugins that implement Custom Blocks this way, and many others that did it with just Armor Stands (which you should avoid).

Sorry, I am adding new features constantly so I thought that it was time for a price increase. If you think about it though, you're paying for 7 months of work, and the only other plugin that could ever do this stuff was NewItems at 28.99€. So, I think it is very much worth it.